To provide a weight measuring device or the like capable of discriminating a functional liquid drop discharge head having discharge failure when measuring a discharge weight, and performing excellently discharge of functional liquid drops from a plurality of functional liquid drop discharge heads.
This weight measuring device 242 provided on a drawing device loaded with the plurality of functional liquid drop discharge heads, for measuring the discharge weight of functional liquid of a nozzle row unit in each functional liquid drop discharge head, has a container 240 for receiving the functional liquid measured and discharged in the nozzle row unit, an electronic force balance 241 for measuring the weight of the functional liquid in the container, and a flashing box 243 disposed around the container 240 and receiving discarding discharge from a functional liquid discharge head other than a measuring object when performing measuring discharge.
ABE HIROMITSU
ISHIKAWA RYO
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